stewart



Y (No Model.) 2 sheetssheet 1.

W. T. STEWART. APPARATUS FOR GENBRATING AN ILLUMINATING AND HEATING GAS.

No. 362,467. ,Y Patented May 3, 1887.

WITNESSES: INVENTOR.

* www. @j

.Wk/s

(No Model.) 2 Sheets-Sheet 2. W. T. STEWART.

APPARATUS POR @rl-NERA'IINGry AN ILLUMINATING AND HEATING GAS. No. 362,467. Patented May 3, 1887.

WITNEssl-:s: INV

www

A UNITED STATES PATENT OFFICE.

WILLIAM fr. STEWART, or rIrTsBURG, PENNSYLVANIA, AssIGNoE or ONE-HALE To WILLIAM H. DENNIsToN, or sAME PLAGE.

APPARATUS FOR GENERATING AN ILLUMINATING AND HEATING GAS.

SPECIFICATION forming part of Letters Patent No. 362,467, dated MayS, 1887.

Application tiled January 24, 1887. Serial No. 225,314. (No model.)

To all whom, it may concern:

Be it known that I, WILLIAM T. STEWART, a citizen of theUnited States, residing at Pittsburg, in the county of Allegheny and State ofv Pennsylvania, have invented certain new and.

L, of which will be fully hereinafter specified,

- and pointed ont in the claim.

' the retort.

Yretort constitute an injector.

In the` accompanying drawings, Figure l represents a front elevation of the gas-generating apparatus. Fig. 2 is a transverse vertical section of the furnace, retort, chambers, pipes, and boiler. Fig. 3 represents a central vertical longitudinal sectional view. Fig. 4t is an end perspective view, in fragments, of

In this view the Y-,shaped pipecoupling is shown, which connects the steam and oil pipes. The retort end of the air-pipe is also shown. Fig. 5 is an enlarged sectional View of the Y-shaped coupling and connected pipes.- Said coupling and the short pipe or nozzle connecting it with the gas-generating Fig. 6 is a central longitudinal sectional View of the steamsuperheating chamber and the steam returnpipes therein, and Fig. 7 is a detail of the pipe which connects 'the retort and washer. This pipe is provided with a T- fitting, the head of which is removable, so that access may be had to the interior of the pipe for cleaning the same.

Like letters indicate like parts in the several views.

rIhe letter A represents the brick-work, in which islocated the furnace B. NVithin said briclbwork, and immediately above the furnace,is a D-shaped retort,0. Also Within said brick-work, and located above the retort, are two (2) pipes or chambers,D E.` The retort and chambers D E are preferably constructed of German clay, so as to more readily withstand 5o the intense heat to which they are subjected'.

.cates at its upper end with the boiler.

Said pipes and retort lie parallel lengthwise of the furnace framework, and they areiln mediately subjected to the heat and flame arising from the furnace.

E represents the boiler located at one side of the brick frame-work.

F indicates a tank provided with hydrocarbon. f

The letter G indicates an air-compressor.

vI-I is a washer located in the rear of the generating apparatus. Said washer ispreferably provided with water. A pipe, I, is connected at one end with the upper rear end 0f the retort. The other end of said pipe enters the washer, and extends nearly to the bottom thereof. By means of said pipe,which is open at both ends, communication is established between the retort and washer.

.I represents a pipe one end of which opens into the washer above the liquid therein. The other end ot' the pipe J opens into and com- -municates with the gas-holder. Said holder is niet shown in the drawings.

' K5 represents a short pipe connected to and communicating with the under side'of the oiltank F.

vK represents a pipe provided with a funnel,Ki, on its upper end. Said funnel is immediately under the lower end of the pipe K5, with a space intervening, whereby the quantity of oil fiowing from the tank through the pipe K5 may be observed.

K2 represents a stop-cock in the pipe K5 for regulating the iiow of oil from the tank. By means et' the pipes K K oil may be conveyed from the tank to the retort.

L indicates a steam pipe, which communi- The lower end of said pipe communicates with the injector M, which is located near the head of the gas-generating retort.

K represents the injectors nozzle. This nozzle opens into the head of the gas-generating ret-ort. threaded at its open ends and side for the recept-ion of the externally screw-threaded ends of the connected pipes and nozzle. l

K represents one of said pipes, which conveys the oil into the injector, Aand L the pipe which. conveys the steam thereinA The inner The injector is internallyscrew ICO side of the injector is provided with an inwardly-inclined llange, m, which tends to detiect the steam from thepipe L into the nozzle K. The oil and steam commingle at the point m in the injector and pass together into the gasgeneratiug retort.

The large clay pipe D, or chamber, is provided with a series of parallel return-pipes. The ends of these pipes are connected and communicated so as to form a continuous pipe, the induction and discharge ends whereof are connected to the steam-pipe L, and form a part and continuation thereof, wherebysteam admitted from the boiler into the pipe L is first conveyed through the series of small pipes in the chamber D, and thence conveyed to the retort.

The letter O represents an air-pipe leading from the air-compressor Gto the inductionpipe which forms one of a series of pipes in the chamber E. Said chamber E, like its counterpart D, is provided with a series of retur11-pipes so connected as to form a ceutiuuous pipe, the induction and discharge ends whereof engage and communicate with the air-pipe O. The extreme outer end of said pipe O enters into aud through the front head of the retort. By this means the air from the compressor is passed through the pipe O, su perheated by its passage through the return pipes in the chamber E, and thence passed on and discharged into the retort. A small steampipe, P, connects the main steam-pipe L with the air-compressor G, for the purpose ot' actuating the pump of the latter.

Q represents a small waste-pipe connected to and leading from the rear end of the retort.

O represents a gage on the pipe O, iminediA ately above the compressor, and L indicates a gage on the steam-pipe.

The letter R represents a pipe connected at one end with the gaspipe I, and at the other with the boiler. rllhis pipe is provided with a stop-cock, R. rPhe object of said pipe is to convey a gas-fuel from the pipe I to the boiler. The steam, oil, air, and waste pipes herein specified are provided with suitable stop-cocks and regulating-valves.

The operation of the invention is as follows: A. tire is started in thefnruace B under the rctort, and also iu the fnebox in the boiler.

rPhe furnaeetire heats the retort, chambers D E, and their inclosed pipes. The steam from the boiler is admitted through the pipe L into the series of return-pipes in the chamber D, whereby said steam is superheated. The steam is then passed on through the pipe L into the injector, and thence through the nozzle K into the retort. At the same time oil is permitted to flow from the tank F through the pipes K5 K into theinjector, where it comminglcs with the steam, and both oil and steam, bythe superior pressure of the latter, are forced into the retort. At the same time a supply of air is forced from the compressor into and through the return-pipes in the air-heating chamber IG, whereby the air is subjected to an intense heat. On leaving the chamber the heated air passes through the pipe O and enters the retort.

The supcrheated steam and the air in their,

passage through the retort become im pregnated and eommingle with the carbonaceous vapor arising from the hydrocarbon, and the resulting gas passes out of the pipe I in the rear end of the retort, and it is then passed through the washer, and thence out of the pipe J and into the gas-holder.

I am aware that prior to my invention hyd rocarbon oils,steam, and atn'iosphericair have been combined for the production of a heating and illuminating gas.

Having thus described my invention, Iclaim as new and desire to secure by Letters Patent- A gas-generating apparatus consisting in the combination of a furnace, a gasgenerating retort, and au injector connected therewith, a steamsuperheatiug chamber provided with a series of return-pipes, a steam-pipe connecting the discharge end ofsaid returnpipcs with the injector, an oil-supply pipe connected with said injector, and an air-heating chamber also provided with a series of return-pipes, the discharge end of said air-pipes being connected by pipe with the gas-generating retort, substantially as described, and l'or the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

W I LLIA M T. STE W AR' l. Witnesses:

FRANK A. Fours, H. L. Cnnis'rx'. 

